Home / 7,686.24-11,535.60-3,989.64

Finding the Fourth Proportional to 7,686.24, 11,535.60 and 3,989.64

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Solution

The fourth proportional to 7,686.24, 11,535.60 and 3,989.64 is: 5,987.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,686.24 : 11,535.60 = 3,989.64 : x
  2. Step 2: Convert to fraction form
    7,686.24/11,535.60 = 3,989.64/x
  3. Step 3: Cross multiply
    7,686.24x = 11,535.60 × 3,989.64
  4. Step 4: Simplify right side
    7,686.24x = 46,022,891.18
  5. Step 5: Solve for x
    x = 46,022,891.18/7,686.24
  6. Step 6: Final answer
    x = 5,987.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.